Example 1. debug_print_backtrace() example
| <?php
// include.php file
function a() {
    b();
}
function b() {
    c();
}
function c(){
    debug_print_backtrace();
}
a();
?>
<?php
// test.php file
// this is the file you should run
include 'include.php';
?> | 
The above example will output 
something similar to:
| #0  eval() called at [/tmp/include.php:5]
#1  a() called at [/tmp/include.php:17]
#2  include(/tmp/include.php) called at [/tmp/test.php:3]
#0  c() called at [/tmp/include.php:10]
#1  b() called at [/tmp/include.php:6]
#2  a() called at [/tmp/include.php:17]
#3  include(/tmp/include.php) called at [/tmp/test.php:3] |